package cn.webrx;

public class Str8 {
    public static void main(String[] args) {
        //isBlank()
        System.out.println("\n".isEmpty());//false
        System.out.println("     ".isBlank()); //true

        System.out.println(" Javastack ".trim());
        System.out.println(" Javastack ".strip());

    }
}
